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题名: Preparation and application of 4-amino-4'-nitro azobenzene modified chitosan as a selective adsorbent for the determination of Au(III) and Pd(II)
作者: Wang, Huanfeng1;  Bao, Changli1;  Li, Fei1;  Kong, Xiangfei2;  Xu, Jijing1
关键词: Azobenzene ;  Modified chitosan ;  Precious metal ions ;  Adsorption ;  Au- ;  Pd-determination
刊名: MICROCHIMICA ACTA
发表日期: 2010-02-01
DOI: 10.1007/s00604-009-0265-9
卷: 168, 期:1-2, 页:99-105
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: Crosslinked chitosan was modified with 4-amino-4'-nitroazobenzene and characterized by FT-IR and SEM. The adsorption of Au(III) and Pd(II) was optimum at pH 3.0 for Au(III) and at pH 2.0 for Pd(II), where maximum mass adsorption were 69.93 mg g(-1) and 58.58 mg g(-1), respectively. The adsorption isotherms obey the Langmuir equation in case of Au(III), and the Freundlich and Langmuir equations in case of Pd(II). The adsorption kinetics follows a pseudo-second-order model. This new adsorbent shows high affinity for Au(III) and Pd(II), while the adsorption is negligible for K , Na and Ca and no adsorption of several other metal ions occurs. The method was successfully applied to the determination and separation of Au(III) and Pd(II) in aqueous samples and ore.
关键词[WOS]: METAL-IONS ;  ADSORPTION BEHAVIOR ;  GEL BEADS ;  RECOVERY ;  RESINS ;  GOLD ;  GOLD(III) ;  SORPTION ;  PRECONCENTRATION ;  MICROSPHERES
语种: 英语
WOS记录号: WOS:000274098300015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141638
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Jilin Univ, Coll Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Huanfeng,Bao, Changli,Li, Fei,et al. Preparation and application of 4-amino-4'-nitro azobenzene modified chitosan as a selective adsorbent for the determination of Au(III) and Pd(II)[J]. MICROCHIMICA ACTA,2010,168(1-2):99-105.
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